Pump.



PATENTED MAR. 24; 1903'L W. 1A@ KERPOOT.

y PUM?. APPLICATION FILED JAN. 20, 1902.

No MODEL.

W wwf-w. PUSH: cn.

UNITED STATES PATENT OFFICE.

WILLIAMlA. KERFOOT, OF EVANSTON, ILLINOIS.

PUMP.

SPECIFICATION formingpart of Letters Patent No. 723,394., dated March 24, 1903.

.Application filed January 20, 1902. Serial No. 90,417. (No model.)

Be it known that I, WILLIAM A. KEREooT, of Evanston, in the coun-ty of Cook and State of Illinois, have invented certain newand useful Improvements in Pumps; and I hereby declare that the following is a-full, clear, and -exact description thereof, reference being had to the accompanying drawings, which form part of this specification. Y Y

My invention relates to improvements in pumps. It has especial reference to a means for controlling the motive power which is used to operate such pumps.

The object of my invention is to provide an especially-improved means whereby the motive power of a pump,-such as a windmill or the like, may be automatically set into operation or thrown out of operation with reference to the pump by means ofv an improved automatically operated device the function of which is brought into eifect by the instrumentality of the pump.

Whenever a pump is operated by some mechanical power, suchas windmills, for lling a receptacle, such as a water tank or reservoir, it is desirable when the said receptacle is filled to stop the motion of the apparatusthat supplies the power for operating the pump either as a matter of economy or to save the wear and tear upon the said pump and the motive apparatus. My device is especially adapted to be kused with pumps of this class when such pumps are provided with a source of power, such as windmills. It comprises a means whereby the movement of the windmill may be arrested with reference to the pump at predetermined times-such, for instance, as when a tank `or reservoir is properly filled with water Aand it consequently becomes desirable to stop the operation of the windmill and pump.

The object of my present invention is to provide an improved construction in the several parts or features of pump-controllers of the character referred to; and it consists in the matter hereinafter set forth, and particularly pointed out in the appended claims.

The pump shown in this instance as embodying my invention in one form is a donble-acting force-pump of that type in which two cylinders of dierent diameters are connected with each other' so as to be in open .line 1 l in Fig. 3.

vcommunication at their adjacent ends, with ythe larger cylinder below and connected with the water-supply by a suitable conduit at its lower end, and in which large and small pistons are attached to a common piston-rod and the larger piston is provided with valve-passages, closing when the pistons are raised and opening when the pistons are lowered, so that on the upstroke of the piston a discharge of water will take place through an outlet provided between the two cylinders equal to the dierence in displacement of the large and small pistons, while on the downstroke of the piston an additional discharge equal to the displacement of the small piston will occur.

The improved mechanism shown in this specification is adapted to be used in connectionwith either class of windmills where it becomes necessary to push up on a rod for the purpose of disconnecting the Inotive power with reference to the pump or in such mills where it becomes necessary to pull down on a connecting rod or chain for the purpose of disconnecting the motive power of the windmill, the arrangement being such that the device may be applied conveniently to either Vclass of mills, and to this especial feature my invention relates.

In the drawings, Figure l is a sectional elevation of a pump equipped with my controlling mechanism, showing portions of the water-chamber, cylinders, andregulator in section in the plane indicated by the straight section-indicating line l l of Fig. 3 and portions' of the discharge-pipe and its connection with the Water-chamber in section on the plane indicated by the angular branch of Fig.. 2 is a broken-away portion of the pump, showingthe fulcrum and lever of my controlling mechanism reversed in position with reference to that shown in Fig. l. tion taken just above the water-chamber shown in Fig.' l. v.

In Fig. l' the stop or controlling mechanism is shown asl it would be applied to a windmill, whereby the motive power of the mill may become unshipped or disconnected with reference to the pump by pulling down the chain.

In Fig. 2 the mechanism is reversed, and it indicates a means whereby the windmill mo- Fig. 3 is a transverse sec` IOO the pump, to which the cylinders 2 and 3 areA joined in axial line and which are provided with the usual pistons 4and 5. A piston-rod 6 may be extended to any power-producing device-"such as a windmill, water-wheel, steam-engine, or the like-l-by which it may be thereby reciprocated. An airfchamber 7 is mounted on and connected with the waterchamber 1. The discharge-pipe 10 is connected with the water-chamber 1, the lower1 end of which forms a seat for the valve 18.V Con nected axially in line with the pipe 10 is a nipple l2, the upper surface of which forms a valve-seat. The lower end of the nipple 12 is connected to a conduit-pipe 13, which is led E some distance from the pump to a reservoir. On the upper end of the pipe 13 a oat-valve l is attached to the lever 15, which is pivotallysupported upon the bracket 15b and which is adapted to be opened by the float-weight 16 when the water in the reservoir is below a certain determined point and which is closed by the said float when the water rises to the point shown in the drawings. A valve-rod 17 passes axially through the discharge-pipe 10 and is provided upon its lower end with an adjustable valve 18, shown in the drawings seated on the valve-seat formed by the upper surface of the nipple 12. When the valve is in this position, the pump will discharge through the pipe 10. When the valve is raised and seated upon the lower end of the pipe 10, the pump will discharge through the conduit-pipe 13 into the reservoir 14.

20 is a cylinder of my improved device, which is connected to the water-chamber l by means of the pipe 2l. This pipe is screwed into the removable flange or plate 22, which is held onto the perforated face of the chamber 1 by means of cap-screws 23 23. Bythis means the entire apparatus may be readily removed from the chamber 1, and when it is desirable to use the pump without my improved device an imperforate plate may be made to take the place of the plate 22 for the purpose of closing the aperture in the wall of the chamber 1.

24 is aclamp by means of which and a setscrew 24 the cylinder 2O is supported in avertical position by the connection of the clmap 24 with the vertical pipe 7.

25 is a cap which is adapted to be rotated on and afterwards fixed to the upper end of the cylinder 20 by means of set-screws 26 26 or by any other convenient and suitable means.

27 is an integrally-formed upwardly-extending support, and 29 isa guide or stungbox through which the piston-rod 30 is adapted to pass freely. The lower end of this rod carries a piston 31, which is held normally in the lowermost part of the cylinder by means of a weight 38 and the open helical spring 32, which is contained within the said cylinder between the cap 25-and the top of the said piston. The upper part 33 of the pis- `ton-rod 30 is flattened and carries'two grooved rollers 34 and 35, through or between which the arm 36 is adaptedto pass. A series of holes 37 are made in the arm 36, and 38 is a weight adapted to be adjusted at varying po'-l sitions along the arm or lever 36.

39 is a quadrant fixed to the outwardly-extending end of the arm 36, around which the chain 40 is partially wound when a chain is to be used; but a rod may be connected directly to the lever, as shown in Fig. 2. This chain is designed to extend to the windmill or other power-producing deviceandis arranged to unship or disconnect the power with reference to the pump when the chain or rod is pulled down, as in the operation of the de'- vice shown in Fig. 2.

The lever 36 is provided with a slot 28, through which the pin 41 of the support 27 passes. gitudinally when it is being vertically moved by the piston-rod 30 by virtue of the slot 28 and the pin 41, s0 as to prevent clamping and distortion of the position of the verticallymoving piston-rod.

In Fig. 2 the cap 25 of the cylinder 20 has been rotated one-half of a revolution and xed an'd the end of the arm 36, carrying the weight 38, is shown to have been transposed in its position with the end carrying the quadrant 39. In Fig. 2a push-rod 42 is connected to the end of the lever 36.

43 is a platform, below and to which the pump and the apparatus just described are properly suspended.

The operation of the device .is as follows: When the valve 18 is seated upon the lower The lever 36 is adapted to slide lon- IOO IIO

end of the pipe 10, the water, by the reciprocation of the pistons 4 and 5, is forced through the pipe 13 into the reservoir 14. When the reservoir has been filled, as shown in Fig. 1, the float 16 is raised thereby and the valve 15 is closed. The water will lthen be forced through the pipe 21 into the cylinder 20, under the piston 31, and will raise the piston against the tension of the springl 32 and weight 38, and thereby raise the outer end of the fulcrum-lever 36 and lower the opposite end of the said lever, which is pivoted at 41 on the support 27, and the quadrant 39 will pull down or wind up the chain to some extent, and thereby pull out the shifting device of the windmill and disconnect the operating part from the piston-rod 6. Such an arrangement as shown in Fig. 1 is desirable when it becomes necessary to pull down a rod or the chain 40 in order to unship or disconnect the connecting mechanism.

When a mill is of the character known as a push-mill-that is to say, where it is necessary to push upon the rod in order to disconnect it or unship it-then the cap 25 may be revolved or rotated one-half` of a revolution upon the top of the cylinder 2O and held in position by the screws, and the connection to such a rod may be made as shown in Fig. 2, thereby shifting the positions of the lever and the fulcrum-support. It therefore will be seen that my device is applicable to both or either types of windmills-A-a push-up or a pull-down mille-it being only necessary to revolve the cap 25 one-half of a revolution to use either end of the fulcrum-lever 36 and for transposing the position of the fulcrumsupport for the purpose of pulling down or raising up the shifting rod when piston 31 is raised in the cylinder 20.

The weight 38 may be used as a means for adjusting or for more inely graduating the tension of the device than can be produced by the spring 32 when used alone. This weight will be properly placed Whether 'the device is in the position shown in Fig. 1 or in Fig. 2, as it sometimes becomes necessary to increase the pressure in the cylinder 20, which is essential for raising the piston 31 for the purpose of overcoming resistance in the pipes, so that there will be sufficient tension in the spring 3 2 or an equal effect produced by the weight 38 for the purpose of forcing the water contained in the cylinder 2O into the reservoir 14 Whenever the valve 15 is raised, and thereby opening the outlet in the pipe 13, so that the cylinder 20 will become completely discharged.

Having described my invention, what I claim as new and useful, and desire to secure by Letters Patent of the United States, is-

1. In combination witha pump, of a source of power for actuating said pump connected therewith, and a power-controlling device comprising a cylinder, a piston in said cylinder, a cap adapted to be rotated on and secured to said cylinder, a support carried by and located on one side of said cap, a lever fnlcrumed on said support, a piston-rod connecting said piston and said lever, a means for depressing said piston, a connection be- 27 and loosely connected with the piston-rod 30, said lever-extending beyond said rod and support in both directions and provided at each end with means for attachment to the pump-connecting instrumentalities.

3. In a power-controlling device for a pump the combination, of a cylinder 20, the cap 25 adapted to be rotated thereon, set-screws 26 for fixing the cap in position, the support 27 on one side and integral with the said cap, the lever 36 fulcrumed to said support, the piston 31, the piston-rod 30 adapted to raise and lower said lever, and an open helical spring 32 between said cap and said piston for depressing said piston.

4. In a powercontrolling device for a pump the combination, of a cylinder 20, a lever 36, pivoted on a fulcrum-support 27, a pistonrod 30 for moving said lever, and grooved wheels 34. and 35 carried by said piston-rod between which said lever passes.

5. In a power-controlling device for a pump the combination, of a cylinder 20, a lever 36,

pivoted on afulcrum-support27,apiston-rod 30 for moving said lever, grooved wheels 34E and 35 between which said lever passes, and a slot 2S in said lever. Y

In testimony that I claim the foregoing as my own I affix my signature in presence of two witnesses.

WILLIAM A. KERFOOT. In presence of- D. T. HUBER, MARY F. ALLEN. 

